Threadfin Rainbowfish

Iriatherina werneri

Minimum Tank Size

20 gal

Temperature

75–82°F

PH

5.5–7.5

Adult Size

1.5–2 in

Temperament 

Very peaceful, delicate schooling fish

Care Difficulty

Intermediate

Diet & Feeding

Tiny prepared foods and small frozen/live foods; small mouth requires fine food.

Care Instructions

Avoid boisterous feeders and fin nippers; provide plants and calm feeding opportunities.

Flow & Filtration

Gentle-to-moderate flow.

Planted Tank Suitability

Excellent.

Tank Mate Compatibility

Good Tank Mates
  • Small Rasboras
  • Pygmy Corydoras
  • Dwarf Shrimp

Use Caution 
  • Honey Gourami

Avoid
  • Tiger Barb
  • Angelfish
  • Large Fish

Compatibility Notes

Delicate fins and slow feeding make calm nano companions best.

Breeding Notes

Eggs are deposited among fine plants or spawning mops.